Display panel and display device

ABSTRACT

A display panel is provided. The display panel has a display region and a non-display region. The non-display region has an aperture region and a non-aperture region surrounding the aperture region. The display panel includes a plurality of light-emitting elements disposed in the display region. The display panel includes a plurality of first light absorbing patterns and a plurality of second light absorbing patterns disposed in the non-aperture region. The plurality of first light absorbing patterns and the plurality of second light absorbing patterns are configured to absorb different colors of lights.

BACKGROUND Technical Field

The present disclosure relates to a display device, and in particular,it relates to a display panel of the display device.

Description of the Related Art

Electronic devices with panels, such as displays, smartphones, tabletcomputers, notebook computers or televisions have become indispensablenecessities in modern society. With the flourishing development of theseelectronic devices, consumers have high expectations regarding theirquality, functionality, and price.

However, these electronic devices have not yet met consumer expectationsin various aspects. For example, due to the structural design (e.g., thelight shielding layer) of the panel, the signal to noise ratio (S/Nratio) of the sensing element in the electronic device may be decreased.Therefore, the development of a structural design of the electronicdevice that can improve the S/N ratio issue is still one of the goals inthe current industry.

SUMMARY

In accordance with some embodiments of the present disclosure, a displaypanel is provided. The display panel has a display region and anon-display region. The non-display region has an aperture region and anon-aperture region surrounding the aperture region. The display panelincludes a plurality of light-emitting elements disposed in the displayregion. The display panel includes a plurality of first light absorbingpatterns and a plurality of second light absorbing patterns disposed inthe non-aperture region. The plurality of first light absorbing patternsand the plurality of second light absorbing patterns are configured toabsorb different colors of lights.

In accordance with some embodiments of the present disclosure, a displaydevice is provided. The display device includes a sensing element and adisplay panel. The display panel has a display region and a non-displayregion. The non-display region has an aperture region and a non-apertureregion surrounding the aperture region. The display panel includes aplurality of light-emitting elements disposed in the display region. Thedisplay panel includes a plurality of first light absorbing patterns anda plurality of second light absorbing patterns disposed in thenon-aperture region. The plurality of first light absorbing patterns andthe plurality of second light absorbing patterns are configured toabsorb different colors of lights. The sensing element is disposedcorresponding to the aperture region.

A detailed description is given in the following embodiments withreference to the accompanying drawings.

BRIEF DESCRIPTION OF THE DRAWINGS

The disclosure may be more fully understood by reading the subsequentdetailed description and examples with references made to theaccompanying drawings, wherein:

FIG. 1 is a schematic diagram of a display device in accordance withsome embodiments of the present disclosure.

FIG. 2 is a partially enlarged schematic diagram of a display device inaccordance with some embodiments of the present disclosure.

FIGS. 3A-3B are partially enlarged schematic diagrams of a displaydevice in accordance with some embodiments of the present disclosure.

FIGS. 4A-4B are schematic cross-sectional diagrams of a display devicetaken along section line C-D in FIG. 1 in accordance with someembodiments of the present disclosure.

FIGS. 5A-5C are partially enlarged schematic cross-sectional diagrams inregion R3 of a display device in FIGS. 4A-4B in accordance with someembodiments of the present disclosure.

FIGS. 6A-6B are partially enlarged schematic diagrams of a displaydevice in accordance with some embodiments of the present disclosure.

DETAILED DESCRIPTION

The display panel and display device of the present disclosure aredescribed in detail in the following description. It should beunderstood that in the following detailed description, for purposes ofexplanation, numerous specific details and embodiments are set forth inorder to provide a thorough understanding of the present disclosure. Theelements and configurations described in the following detaileddescription are set forth in order to clearly describe the presentdisclosure. The embodiments are used merely for the purpose ofillustration. In addition, the drawings of different embodiments may uselike and/or corresponding numerals to denote like and/or correspondingelements in order to clearly describe the present disclosure. However,the use of like and/or corresponding numerals in the drawings ofdifferent embodiments does not suggest any correlation between differentembodiments.

The present disclosure can be understood by referring to the followingdetailed description in connection with the accompanying drawings. Itshould be noted that, in order to allow the reader to easily understandthe drawings, several drawings in the present disclosure only depict aportion of the electronic device, and the specific elements in thedrawings are not drawn to scale. In addition, the number and size ofeach element in the drawings are only for illustration and the scope ofthe present disclosure is not limited thereto.

Throughout the present disclosure and the appended claims, certain termsare used to refer to specific elements. Those skilled in the art shouldunderstand that electronic device manufacturers may refer to the sameelement with different names. The present disclosure does not intend todistinguish between elements that have the same function but differentnames. In the specification and claims, the terms “comprising”,“including”, “having” and the like are open-ended phrases, so theyshould be interpreted as “including but is not limited to . . . ”.Therefore, when the terms “comprising”, “including” and/or “having” areused in the description of the present disclosure, they specify thecorresponding features, regions, steps, operations and/or components,but do not exclude the existence of one or more corresponding features,regions, steps, operations and/or components.

Directional terms mentioned in the present disclosure, such as “upper”,“lower”, “front”, “rear”, “left”, “right”, etc., are only the directionsreferring to the drawings. Therefore, the directional terms are used forillustration, not for limiting the scope of the present disclosure. Thedrawings depict general features of methods, structures, and/ormaterials used in particular embodiments. However, these drawings shouldnot be interpreted as defining or limiting the scope or propertyencompassed by these embodiments. For example, for clarity, the relativesizes, thicknesses, and positions of the various layers, regions, and/orstructures may be reduced or enlarged.

When a corresponding component (such as a layer or region) is referredto as “(disposed or located) on another component”, it may be directly(disposed or located) on another component, or there may be othercomponents between them. On the other hand, when a component is referredto as “directly (disposed or located) on another component”, there is nocomponent existing between them. In addition, when a component isreferred to as “(disposed or located) on another component”, the twohave an upper-lower relationship in a top-view direction, and thiscomponent may be above or below another component, and the upper-lowerrelationship depends on the orientation of the device.

The terms “about”, “equal to”, “the same as”, “identical to”,“substantially” or “approximately” are generally interpreted as beingwithin 20% of a given value or range, or within 10%, 5%, 3%, 2%, 1% or0.5% of the given value or range.

The ordinal numbers used in the specification and claims, such as theterms “first”, “second”, etc., are used to modify an element, whichitself does not mean and represent that the element (or elements) hasany previous ordinal number, and does not mean the order of a certainelement and another element, or the order in the manufacturing method.The use of these ordinal numbers is used to make a component with acertain name can be clearly distinguished from another component withthe same name. The same words may not be used in the claims and thespecification. Accordingly, the first component in the specification maybe the second component in the claims.

It should be noted that the following embodiments can replace,recombine, and combine features in several different embodiments tocomplete other embodiments without departing from the spirit of thepresent disclosure. The features between the various embodiments can becombined and used arbitrarily as long as they do not violate or conflictthe spirit of the present disclosure.

In the present disclosure, the length and the width of the component canbe measured from an optical microscope image, and the thickness of thecomponent can be measured from a cross-sectional image in an electronmicroscope, but it is not limited thereto. In addition, certain errorsmay exist between any two values or directions used for comparison. Ifthe first value is equal to the second value, it implies that there maybe an 10% error between the first value and the second value; if thefirst direction is perpendicular to the second direction, the anglebetween the first direction and the second direction may be between 80degrees and 100 degrees; if the first direction is parallel to thesecond direction, the angle between the first direction and the seconddirection may be between 0 degrees and 10 degrees.

Unless defined otherwise, all technical and scientific terms used hereinhave the same meaning as commonly understood by one of ordinary skill inthe art to which this disclosure belongs. It should be appreciated that,in each case, the term, which is defined in a commonly used dictionary,should be interpreted as having a meaning that conforms to the relativeskills of the present disclosure and the background or the context ofthe present disclosure, and should not be interpreted in an idealized oroverly formal manner unless so defined.

In accordance with some embodiments of the present disclosure, a displaypanel and a display device including the display panel are provided. Thedisplay panel includes a plurality of light absorbing patterns disposedin the non-aperture region of the non-display region and the lightabsorbing patterns can absorb different colors of lights, for example,the non-target lights of various wavelengths. With the configuration ofsuch light absorbing patterns, the non-target lights of variouswavelengths reaching the sensing element in the display device can bereduced. Therefore, the signal to noise ratio performance of the sensingelement in the display device can be improved.

Refer to FIG. 1 , FIG. 2 and FIG. 3A. FIG. 1 is a schematic diagram of adisplay device 1 in accordance with some embodiments of the presentdisclosure. FIG. 2 is a partially enlarged schematic diagram of regionR0 of the display device 1 in FIG. 1 in accordance with some embodimentsof the present disclosure. FIG. 2 illustrates a bottom-view schematicdiagram of the display device 1 in the region R0. FIG. 3A is partiallyenlarged schematic diagrams of region R1 in FIG. 2 in accordance withsome embodiments of the present disclosure. It should be understood thatonly some elements of the display device 1 are illustrated in FIG. 1 ,FIG. 2 and FIG. 3A for clarity. In some embodiments, additional featuresor elements may be optionally added to the display device 1. In someembodiments, some features of the display device 1 described below maybe optionally replaced or omitted. FIG. 3A illustrates a schematicdiagram of the display panel 10 in the region R1. It should beunderstood that FIG. 3A only illustrate a few light-emitting elements200 to described their position for clarity, the number, shape or sizeof the light-emitting elements 200 are not limited to those shown in thefigure.

In some embodiments, the display device 1 may include a light-emittingdiode display device, such as an inorganic light-emitting diode displaydevice, an organic light-emitting diode (OLED) display device, a minilight-emitting diode (mini LED) display device, a micro light-emittingdiode (micro LED) display device, a quantum dot (QD) light-emittingdiode (for example, QLED or QDLED) display device, or a combinationthereof, but it is not limited thereto.

In some embodiments, the display device may be a tiled display device,bendable electronic device or a flexible electronic device, but it isnot limited thereto. It should be understood that a display device istaken as an example in the following descriptions to illustrate thepresent disclosure, but the present disclosure is not limited thereto.In some embodiments, the display device may be equipped with otherfunctions and/or serve as a touch device, a sensing device, an antennadevice or a combination thereof, but it is not limited thereto.

As shown in FIG. 1 , FIG. 2 and FIG. 3A, in some embodiments, thedisplay device 1 may include a display panel 10 and a sensing element20. The display panel 10 may have a display region DR and a non-displayregion NR, the non-display region NR may have an aperture region 10A anda non-aperture region 10B surrounding the aperture region 10A. In someembodiments, a display panel 10 includes a plurality of light-emittingelements 200 and a plurality of driving elements 210 electricallyconnected to the plurality light-emitting elements 200 respectively, andthe plurality of light-emitting elements may emit a light (shown in FIG.3A) for displaying images. The display region DR may be defined by aregion enclosing all of the light-emitting elements 200. In other words,the plurality of light-emitting elements may be disposed in the displayregion DR. The non-display region NR may be defined by other region ofthe display panel 10 excluding the display region DR. In someembodiments, the non-display region NR may include the aperture region10A and the non-aperture region 10B, and the sensing element 20 may bedisposed corresponding to the aperture region 10A. In other words, thesensing element 20 may overlap the aperture region 10A in the normaldirection Z of the display panel 100. In some embodiments, the displayregion DR may surround the non-display region NR. In some embodiments,the shape of the non-display region NR may be a round, a rectangular oran irregular shape, but it is not limited thereto. In some embodiments,the sensing element 20 may include a camera, a fingerprint sensor,another suitable sensing element, or a combination thereof, but it isnot limited thereto.

As shown in FIG. 2 and FIG. 3A, in some embodiments, the aperture region10A may be a through-hole via. In some embodiments (not shown), theaperture region 10A may be a blind via, the blind via may be a via thatremoves part of the display panel 10 but not penetrate the display panel10. For example, at least part of a substrate 104 or at least part of abase 102 may not be removed, and the detailed description of thesubstrate 104 and/or the base 102 will be explained later. In someembodiments, there is a boundary BB between the non-display region NRand the display region DR, and there is a boundary BB1 between theaperture region 10A and non-aperture region 10B. When the apertureregion 10A is a through-hole via, the boundary BB1 may be an outer edgeof the through-hole via. In some embodiments (not illustrated), when theaperture region 10A is a blind via, the boundary BB1 may be defined byan outer edge of the blind via.

In addition, as shown in FIG. 2 , the non-aperture region 10B may have awidth W1, and the aperture region 10A may have a width W2. It should beunderstood that, when a shape of the aperture region 10A isapproximately a circular shape, the width W2 of the aperture region 10Amay be defined by a diameter of the circular shape. When the shape ofthe aperture region 10A is not a circular shape, the width W2 of theaperture region 10A may be defined by a maximum width of the apertureregion 10A. Moreover, the width W1 of the non-aperture region 10B may bedefined by a width along an extending line LW1 of the width W2. In someembodiments, a ratio of the width W1 of the non-aperture region 10B to ahalf of width W2 of the aperture region 10A may be greater than or equalto 0.1 and less than or equal to 1 (i.e. 0.1≤W1/(W2/2)≤1), or may begreater than or equal to 0.2 and less than or equal to 0.5 (i.e.0.2≤W1/(W2/2)≤0.5), such as 0.25, 0.35, 0.45, but it is not limitedthereto.

In some embodiments, the width W1 of the non-aperture region 10B and thewidth W2 of the aperture region 10A are 0.73 millimeters (mm) and 3.74mm, respectively, but it is not limited thereto. In some embodiments,the width W1 of the non-aperture region 10B and the width W2 of theaperture region 10A are 0.46 mm and 3.22 mm, respectively, but it is notlimited thereto. In some embodiments, the width W1 may be greater thanor equal to 0.3 mm and less than or equal to 0.8 mm (i.e. 0.3 mm≤W1≤0.8mm), such as 0.4 mm, 0.5 mm, 0.6 mm, or 0.7 mm, but it is not limitedthereto.

It should be noted that, in the embodiments, an optical microscopy (OM),a scanning electron microscope (SEM), a film thickness profiler(α-step), an ellipsometer or another suitable methods may be used tomeasure the width, the length, the thickness of each element or thedistance (or gap) between these elements, but it is not limited thereto.In some embodiments, a scanning electron microscope can be used toobtain any cross-sectional image including the elements to be measured,and the width, length, thickness or distance between the elements in theimage can be measured.

In some embodiments, the light-emitting element 200 may include anorganic light-emitting diode (OLED), but it is not limited thereto. Insome embodiments, the driving element 210 may include at least onethin-film transistor, capacitance or other electrical elements. Forexample, the display panel 10 may include a plurality of data lines (notillustrated) and a plurality of scan lines (not illustrated) disposed inthe display region DR.

As shown in FIG. 3 , the display panel 10 may include the lightabsorbing element 100. The light absorbing element 100 may include aplurality of first light absorbing patterns 100 a and a plurality ofsecond light absorbing patterns 100 b disposed in the non-apertureregion 10B of the non-display region NR, and the first light absorbingpatterns 100 a and the second light absorbing patterns 100 b may beconfigured to absorb different colors of lights. In some embodiments,the light absorbing element 100 may further include a plurality of thirdlight absorbing patterns 100 c disposed in the non-aperture region 10B.The first light absorbing patterns 100 a, the second light absorbingpatterns 100 b and the third light absorbing patterns 100 c may absorbdifferent colors of lights. In other words, the first light absorbingpatterns 100 a may absorb a first color of light, the second lightabsorbing patterns 100 b may absorb a second color of light, and thethird light absorbing patterns 100 c may absorb a third color of light,and the first color, the second color and the third color are different.

In some embodiments, the first light absorbing patterns 100 a, thesecond light absorbing patterns 100 b and/or the third light absorbingpatterns 100 c may include organic light-emitting diodes or othermaterials, but it is not limited thereto. However, the plurality offirst light absorbing patterns 100 a, the plurality of second lightabsorbing patterns 100 b and the plurality of third light absorbingpatterns 100 c may not be electrically connected to the driving elements210.

In some embodiments, the first light absorbing patterns 100 a, thesecond light absorbing patterns 100 b and/or the third light absorbingpatterns 100 c may include at least one electron transporting layer, atleast one hole transporting layer, at least one electron injectionlayer, at least one hole injection layer, and/or at least onelight-emitting layer, but it is not limited thereto.

As described above, the ratio of the width W1 of the non-aperture region10B to a half of the width W2 of the aperture region 10A may be greaterthan or equal to 0.1 and less than or equal to 1. In some embodiments,the light absorbing element 100 may be disposed in the non-apertureregion 10B, and the light absorbing element 100 may be formed from theboundary BB1 to the boundary BB, but it is not limited thereto. In otherwords, in some embodiments (not illustrated), the light absorbingelement 100 may be disposed in part of the non-aperture region 10B, butit is not limited thereto.

In some embodiments, when the width W1 of the non-aperture region 10Band the half of the width W2 of the aperture region 10A are configuredto be within the above range (e.g., 0.1≤W3/(W2/2)≤1), the non-targetlights (such as the non-target lights L2) of various wavelengths can beefficiently absorbed by the light absorbing element 100, and thenon-target lights (such as the non-target lights L2) reaching thesensing element 20 can be reduced. Therefore, the signal to noise ratio(signal/noise) of the sensing element 20 can be improved. It should benoted that if the ratio of W1/(W2/2) is too small (e.g., less than 0.1),the light absorbing effect of the light absorbing element 100 may beinsufficient, and the signal to noise ratio of the sensing element 20may be decreased; and if the ratio of W1/(W2/2) is too large (e.g.,greater than 1), the area of the non-display region NR may be too largeso that the display performance of the display panel 10 may be affected,or the aperture region 10A may be too small so that the sensingperformance of the sensing element 20 may be affected.

As shown in FIG. 3A, in some embodiments, the plurality of first lightabsorbing patterns 100 a, the plurality of second light absorbingpatterns 100 b may be arranged in a staggered manner. For example, theremay be a second light absorbing pattern 100 b and/or a third lightabsorbing pattern 100 c between adjacent ones of the first absorbingpatterns 100 a. There may be a first light absorbing pattern 100 aand/or a third light absorbing pattern 100 c between adjacent ones ofthe second absorbing patterns 100 b. In some embodiments, the firstlight absorbing patterns 100 a, the second light absorbing patterns 100b, or the third light absorbing patterns 100 c may be arranged in arepeated manner or a random manner. In some embodiments, the same typeof light absorbing patterns (such as the first light absorbing patterns100 a or the second light absorbing patterns 100 b) are not connected toeach other.

In some embodiments, different types of light absorbing patterns aredifferent in area. In some embodiments, an area of one of the pluralityof first light absorbing patterns 100 a may be different from an area ofone of the plurality of second light absorbing patterns 100 b and/or anarea of one of the plurality of third light absorbing patterns 100 c. Insome embodiments, the first light absorbing patterns 100 a may have sameor different areas. In some embodiments, the second light absorbingpatterns 100 b may have same or different areas. In some embodiments,the third light absorbing patterns 100 c may have same or differentareas. In some embodiments, a number of the plurality of first lightabsorbing patterns 100 a may be different from or the same as a numberof the plurality of second light absorbing patterns 100 b and/or anumber of the plurality of third light absorbing patterns 100 c. In someembodiments, the number of the plurality of first light absorbingpatterns 100 a may be less than the number of the plurality of secondlight absorbing patterns 100 b, and the area of one of the plurality offirst light absorbing patterns 100 a may be greater than the area of oneof the plurality of second light absorbing patterns 100 b. In someembodiments, the first light absorbing pattern 100 a, the second lightabsorbing pattern 100 b and the third light absorbing pattern 100 c mayinclude red OLED martials, green OLED martials, blue OLED martialsrespectively, but it is not limited thereto.

In some embodiments, an area of the light absorbing element 100 may begreater than or equal to 1000 μm² and less than or equal to 3000 μm²(i.e. 1000 μm²≤an area of the light absorbing element 100≤3000 μm²),such as 1500 μm², 2000 μm², or 2500 μm², but it is not limited thereto.

Furthermore, referring to FIG. 3A, the display panel 10 may furtherinclude a conductive structure 110 disposed in the non-display regionNR. The conductive structure 110 (including a plurality of wires 110 w)may overlap part of the light absorbing element 100 in the normaldirection Z of the display panel 100. In some embodiments, the wires 110w may be configured to transfer the signals to the light-emittingelements 200, but it is not limited thereto. In some embodiments, thewires 110 w may include conductive material, such as a metal conductivematerial, a transparent conductive material, or a combination thereof.

Refer to FIG. 3A, FIG. 4B and FIG. 5A-5C. FIG. 4B is schematiccross-sectional diagrams of a display device 1 taken along section lineC-D in FIG. 1 in accordance with some embodiments of the presentdisclosure. FIGS. 5A-5C are partially enlarged schematic cross-sectionaldiagrams in a region R3 of the display device 1 in FIG. 4B in someembodiments of the present disclosure. It should be understood that onlysome elements of the display device 1 are illustrated in FIG. 3A, FIG.4B and FIGS. 5A-5C for clarity. In some embodiments, the display device1 may include a base 102 and a substrate 104 disposed on the base 102,and the substrate 104 may include a plurality of slits 120 disposed inthe non-display region NR. The substrate 104 may have a planer surfaceTS away from the base 102, the planer surface TS may have an extendingvirtual line VL, and the slits 120 of the substrate 104 may be definedby the parts of the substrate 104 relatively concave to the extendingvirtual line VL, and the slits 120 do not penetrate through thesubstrate 104.

In some embodiments, the base 102 may include polyimide (PI), but it isnot limited thereto. In some embodiments, the substrate 104 may includepolyimide (PI), but it is not limited thereto. In some embodiments, aninsulating layer (not illustrated, such as SiOx, but it is not limitedthereto) may be disposed between the base 102 and the substrate 104.

As shown in FIG. 3A, in some embodiments, the plurality of slits 120 maybe disposed in the non-display region NR and surrounding the apertureregion 10A. In some embodiments, the display panel 10 may include a damstructure 122 disposed in the non-display region NR. In someembodiments, the dam structure 122 may be disposed between two adjacentones of the slits 120. In some embodiments, the slits 120 and/or the damstructure 122 may protect the display region DR and reduce the risk ofwater vapor or oxygen from entering the display region DR. The slits 120and/or the dam structure 122 may overlap part of the light absorbingelement 100 (including the first light absorbing patterns 100 a, thesecond light absorbing patterns 100 b and/or the third light absorbingpatterns 100 c) in the normal direction Z of the display panel 10. Insome embodiments, a part of the light absorbing element 100 (includingpart of the plurality of first light absorbing patterns 100 a, part ofthe plurality of second light absorbing patterns 100 b and/or part ofthe plurality of third light absorbing patterns 100 c) may be disposedin the plurality of slits 120.

In some embodiments, the first light absorbing patterns 100 a, thesecond light absorbing patterns 100 b and/or the third light absorbingpatterns 100 c may overlap the same as slit in the normal direction Z ofthe display panel 10. In other words, the first light absorbing patterns100 a, the second light absorbing patterns 100 b and/or the third lightabsorbing patterns 100 c may disposed in the same slit. In someembodiments, one first light absorbing pattern 100 a, and/or one secondlight absorbing pattern 100 b may overlap at least two of the slits inthe normal direction Z of the display panel 100.

In some embodiments, the display panel 10 may further include analignment key AK. The alignment key AK may be disposed in thenon-display region NR. In some embodiments, the alignment key AK may bedisposed between the conductive structure 110 and one of the slits 120.In some embodiments, the alignment key AK may be disposed between theconductive structure 110 and the dam structure 122. In some embodiments,the alignment key AK may overlap the light absorbing element 100 in thenormal direction Z of the display panel 10.

As shown in FIG. 2 and FIG. 3B, in some embodiments, the display panel10 may further include the light shielding layer 300 with a ring shapeoverlapping a part of the aperture region 10A and/or at least a part ofthe non-aperture region 10B. For example, the light shielding layer 300may have an aperture 300 p to form the ring shape. In some embodiments,the aperture 300 p of the light shielding layer 300 may overlap theaperture region 10A in the normal direction Z of the display panel 10.It should be noted that although both the aperture 300 p and theaperture region 10A have a circular shape in the embodiments shown inthe figure, the present disclosure is not limited thereto. The aperture300 p and/or the aperture region 10A may have any suitable shape (forexample, ellipse, triangle, square, irregular shape etc.) according toneeds in various embodiments.

FIG. 3B is partially enlarged schematic diagram of a display device inaccordance with some embodiments of the present disclosure.

As shown in FIG. 3B, the non-aperture region 10B has an overlappingregion OR and a non-overlapping region NOR. The overlapping region ORmay be defined by a region that the light shielding layer 300 overlapsthe non-aperture region 10B, the non-overlapping region NOR may bedefined by a region that the light shielding layer 300 does not overlapthe non-aperture region 10B in the normal direction Z of the displaypanel 100. The non-overlapping region NOR may have a width W3, and theoverlapping region OR may have a width W4. In some embodiments, thewidth W3 of the non-overlapping region NOR may be greater than or equalto 100 mm and less than or equal to 400 mm (100 mm≤W3≤400 mm), but it isnot limited thereto. In some embodiments, the width W3 of thenon-overlapping region NOR may be greater than or equal to 200 mm andless than or equal to 300 mm (200 mm≤W3≤300 mm), In some embodiments,the width W4 of the overlapping region OR may be greater than or equalto 100 mm and less than or equal to 700 mm (100 mm≤W4≤700 mm), but it isnot limited thereto. In some embodiments, the width W4 of theoverlapping region OR may be greater than or equal to 100 mm and lessthan or equal to 500 mm (100 mm≤W4≤500 mm), but it is not limitedthereto.

In some embodiments, a ratio of the width W4 of the overlapping regionOR that the light shielding layer 300 overlaps the non-aperture region10B to the width W1 of the non-aperture region 10B may be greater thanor equal to 0.1 and less than or equal to 1 (i.e. 0.1≤W4/W1≤1), orgreater than or equal to 0.2 and less than or equal to 0.8 (i.e.0.2≤W4/W1≤0.8), such as 0.4, 0.5, 0.6, or 0.7, but it is not limitedthereto.

In some embodiments, a ratio of the width W3 of the non-overlappingregion NOR to the width W1 of the non-aperture region 10B may be greaterthan or equal to 0.2 and less than or equal to 0.6 (i.e. 0.2≤W3/W1≤0.6),or greater than or equal to 0.3 and less than or equal to 0.5 (i.e.0.3≤W3/W1≤0.5), such as 0.35 or 0.45, but it is not limited thereto. Insome embodiments, the width W3 of the non-overlapping region NOR and thewidth W1 of the non-aperture region 10B may be 0.23 mm and 0.73 mm,respectively, and the ratio of the width W3 to the width W1 is 0.31, butit is not limited thereto. In some embodiments, the width W3 of thenon-overlapping region NOR and the width W1 of the non-aperture region10B may be 0.25 mm and 0.46 mm, respectively, and the ratio of the widthW3 to the width W1 is 0.53, but it is not limited thereto.

It should be understood that, the width W3 of the non-overlapping regionNOR may be defined by a width of the non-overlapping region NOR alongthe extending line LW1. It should be understood that, the width W4 ofthe overlapping region OR may be defined by a width of the overlappingregion OR along the extending line LW1.

As shown in FIG. 3B, in some embodiments, the light shielding layer 300has an outer edge OE and an inner edge IE. In some embodiments, a ratioof an area A1 of the overlapping region OR that the light shieldinglayer 300 overlaps the non-aperture region 10B to an area A2 of thenon-aperture region 10B may be greater than or equal to 0.1 and lessthan or equal to 1 (i.e. 0.1≤A1/A2≤1), or greater than or equal to 0.3and less than or equal to 0.8 (i.e. 0.3≤A1/A2≤0.8), such as 0.4, 0.5,0.6, or 0.7, but it is not limited thereto. In some embodiments, thearea A1 of the overlapping region OR and the area A2 of the non-apertureregion 10B may be 6.78 mm² and 10.32 mm², respectively, and the ratio ofthe area A1 to the area A2 may be 0.66. In some embodiments, the area A1of the overlapping region OR and the area A2 of the non-aperture region10B may be 2.35 mm² and 5.36 mm², respectively, and the ratio of thearea A1 to the area A2 may be 0.44, but it is not limited thereto. Insome embodiments, the area A1 of the overlapping region OR may begreater than or equal to 1 mm² and less than or equal to 8 mm² (i.e. 1mm²≤A1≤8 mm²)

It should be noted that, when the width W1 of the non-aperture region10B and the width W4 of the overlapping region OR are configured to bewithin the above range (e.g., 0.1≤W4/W1≤1), or the ratio of the area A1of the overlapping region OR to the area A2 of the non-aperture region10B are configured to be within the above range (e.g., 0.1≤A1/A2≤1), thenon-target lights (such as the non-target lights L2) of variouswavelengths can be efficiently absorbed by the light absorbing element100 disposed in the non-aperture region 10B, and the non-target lights(such as the non-target lights L2) reaching the sensing element 20 canbe reduced. Therefore, the signal to noise ratio of the sensing element20 may be improved. On the other hand, if the ratio of W4/W1 or theratio of A1/A2 is too small, the light absorbing effect of the lightabsorbing element 100 may be insufficient, or the signal to noise ratioof the sensing element 20 may be decreased; and if the ratio of W4/W1 orthe ratio of A1/A2 is too large, the light shielding layer 300 mayshield the display region DR to effect the display performance of thedisplay panel 10.

As shown in FIG. 3B, the non-overlapping region NOR may be disposedbetween the overlapping region OR and the display region DR. In someembodiments, the width W3 of the non-overlapping region NOR may begreater than or equal to 200 μm and less than or equal to 300 μm (i.e.200 μm≤W3≤300 μm), such as 210 μm, 220 μm, 230 μm, 240 μm, 250 μm, 260μm, 270 μm, 280 μm, or 290 μm, but it is not limited thereto. The widthW3 of the non-overlapping region NOR may provide a buffer for alignment,e.g., the alignment of the aperture 300 p of the light shielding layer300 and the aperture region 10A. When the width W3 of thenon-overlapping region NOR is configured to be within the above range(e.g., 200 μm≤W3≤300 pm), the display region DR may be less affected bythe shifting of the light shielding layer 300 due to alignment.

Next, refer to FIG. 4A, which is a schematic cross-sectional diagram ofthe display device 1 taken along section line C-D in FIG. 1 in someembodiments. As shown in FIG. 4A, the display device 1 may include thedisplay panel 10 and the sensing element 20, and the sensing element 20may be disposed corresponding to or overlap the aperture region 10A ofthe display panel 10 in the normal direction Z of the display panel 10.In some embodiments, the sensing element 20 may overlap at least part ofthe non-display region NR in the normal direction Z of the display panel10.

In some embodiments, the display device 1 may further include a bufferelement 22 and/or a conductive element 24 disposed between the sensingelement 20 and the display panel 10. The buffer element 22 may providebuffer when the display panel 10 is assembled with the sensing element20. The conductive element 24 may provide electrical connection betweenthe display panel 10 and the sensing element 20, but it is not limitedthereto.

In some embodiments, the buffer element 22 may include a sponge, aresin, another suitable buffer element, or a combination thereof, but itis not limited thereto. The conductive element 24 may include aconductive material. The conductive material may include, but is notlimited to, a metal conductive material, a transparent conductivematerial or a combination thereof.

Referring to FIG. 4A, in some embodiments, the display device 1 mayfurther include an adhesive element 12 and/or a cover layer 14 disposedon the display panel 10 and/or the sensing element 20. The adhesiveelement 12 may be disposed between the display panel 10 and the coverlayer 14, the adhesive element 12 may fix the display panel 10 and thecover layer 14 together, but it is not limited thereto. In someembodiments, the light shielding layer 300 may be disposed adjacent tothe adhesive element 12 and/or in contact with the adhesive element 12.In some embodiments (not illustrated in FIG. 4A), part of the lightshielding layer 300 may overlap the adhesive element 12 (or the displaypanel 10) in the normal direction Z of the display panel 10. In someembodiments, part of the light shielding layer 300 may be disposed inthe aperture region 10A. In some embodiments, the light shielding layer300 may be disposed on the bottom surface (a surface facing the sensingelement 20) of the cover layer 14 and in contact with the cover layer14, but it is not limited thereto.

In some embodiments, the adhesive element 12 may include a photo-curableadhesive, a photo-thermal-curable adhesive, an optical clear adhesive(OCA), an optical clear resin (OCR), a glass frit, another suitableadhesive material or a combination thereof, but it is not limited. Insome embodiments, the cover layer 14 may include, but is not limited to,glass, quartz, sapphire, ceramic, polyimide (PI), polycarbonate (PC),polyethylene terephthalate (PET), polypropylene (PP), another suitablematerial, or a combination thereof. In some embodiments, the cover layer14 may have a single layer structure or multiple layer structure.

Refer to FIG. 4B, which is a schematic cross-sectional diagram of thedisplay device 1 taken along section line C-D in FIG. 1 in accordancewith some other embodiments of the present disclosure. It should beunderstood that, the same or similar components (or elements) in thefollowing paragraph will be denoted by the same or similar referencenumbers, and their materials, manufacturing methods and functions arethe same or similar to those described above, and thus they will not berepeated in the following context.

As shown in FIG. 4B, in some embodiments, the cover layer 14 may have amulti-layer structure. Specifically, in some embodiments, the coverlayer 14 may include first substrate layers 14 a, a second substratelayer 14 b and/or adhesive layers 14 c. In some embodiments, the coverlayer 14 may include at least two substrate layers (such as two firstsubstrate layers 14 a and one second substrate layer 14 b), but it isnot limited thereto. The adhesive layer 14 c may be disposed between thefirst substrate layer 14 a and the second substrate layer 14 b to fixthem together. In some embodiments, the light shielding layer 300 may bedisposed between any one of the first substrate layers 14 a and theadhesive layer 14 c. In some embodiments (not illustrated), the lightshielding layer 300 may be disposed between the second substrate layer14 b and the adhesive layer 14 c. In some embodiments, part of the lightshielding layer 300 may overlap the aperture region 10A, and/or otherpart of the light shielding layer 300 may overlap the non-display regionNR. In some embodiments, the first substrate layer 14 a may include, butis not limited to, polyethylene terephthalate (PET), polyimide (PI),polycarbonate (PC), polypropylene (PP), another suitable material, or acombination thereof. In some embodiments, the second substrate layer 14b may include, but is not limited to, glass, quartz, sapphire, ceramic,another suitable material, or a combination thereof. The material of theadhesive layer 14 c may be the same as or similar to the material of theadhesive element 12, and thus will not be repeated herein.

Next, refer to FIGS. 5A-5C, the FIGS. 5A-5C are partially enlargedschematic cross-sectional diagrams in a region R3 of the display device1 in FIG. 4B. In some embodiments, as mentioned above, the displaydevice 1 may include the base 102 and/or the substrate 104, and thesubstrate 104 may have the slits 120. In some embodiments, the slits 120may surround the aperture region 10A. In some embodiments, there are thenon-slit portions NS between adjacent ones of the slits 120respectively, and the width of the non-slit portions NS may be the sameof different.

In some embodiments, part of the first light absorbing patterns 100 a,part of the second light absorbing patterns 100 b and/or part of thethird light absorbing patterns 100 c may be disposed on the substrate104. In some embodiments, part of the plurality of first light absorbingpatterns 100 a, part of the plurality of second light absorbing patterns100 b and/or part of the plurality of third light absorbing patterns 100c may be disposed in the plurality of slits 120. In some embodiments,the substrate 104 further comprises a plurality of non-slit portions NSdisposed between adjacent ones of the plurality of slits 120respectively, and other part of the plurality of first light absorbingpatterns 100 a, other part of the plurality of second light absorbingpatterns 100 b and/or other part of the plurality of third lightabsorbing patterns 100 c may be disposed on the plurality of non-slitportions NS. In some embodiments, an encapsulating layer 106 may bedisposed on the substrate 104, the first light absorbing patterns 100 a,the second light absorbing patterns 100 b and/or the third lightabsorbing patterns 100 c. In some embodiments, the encapsulating layer106 may cover at least part of the substrate 104, the first lightabsorbing patterns 100 a, the second light absorbing patterns 100 band/or the third light absorbing patterns 100 c.

In some embodiments, as shown in FIG. 5A, the first light absorbingpatterns 100 a, the second light absorbing patterns 100 b and/or thethird light absorbing patterns 100 c may be alternately disposed in theslits 120, but it is not limited thereto.

As shown in FIG. 5B, in some embodiments, different types of absorbingpatterns (at least two types of absorbing patterns) may be disposed inthe same slit 120.

In some embodiments, refer to FIG. 3A, different types of absorbingpatterns (at least two types of absorbing patterns) may overlap the sameslit 120 in the normal direction Z of the display panel 100. Forexample, in some embodiments, part of the first light absorbing pattern100 a and part of the second light absorbing pattern 100 b may overlapthe same slit 120 in the normal direction Z of the display panel 100,but it is not limited thereto. In some embodiments, part of the firstlight absorbing pattern 100 a and part of the third light absorbingpattern 100 c may overlap the same slit 120 in the normal direction Z ofthe display panel 100, but it is not limited thereto. In someembodiments, part of the second light absorbing pattern 100 b and partof the third light absorbing pattern 100 c may overlap the same slit 120in the normal direction Z of the display panel 100, but it is notlimited thereto.

As shown in FIG. 5C, part of one of the first light absorbing patterns100 a may be disposed in the slit 120 and other part of the one of thefirst light absorbing patterns 100 a may be disposed on the non-slitportion NS adjacent to the slit 120. Similarly, part of one of thesecond light absorbing patterns 100 b may be disposed in the slit 120and other part of the one of the second light absorbing patterns 100 bmay be disposed on the non-slit portion NS adjacent to the slit 120.Similarly, part of one of the third light absorbing patterns 100 c maybe disposed in the slit 120 and other part of the one of the third lightabsorbing patterns 100 c may be disposed on the non-slit portion NSadjacent to the slit 120. In some embodiments, one of the first lightabsorbing pattern 100 a, one of the second light absorbing pattern 100b, and/or one of the third light absorbing patterns 100 c may extend inseveral slits 120 and/or extend on several non-slit portions NS.

In some embodiments, one of the first light absorbing patterns 100 a,one of the second light absorbing patterns 100 b and/or one of the thirdlight absorbing patterns 100 c may respectively have different portionsat different heights. For example, as shown in FIGS. 5A-5C, thesubstrate 104 may have the slits 120 and the non-slit portions NS, oneof the slits 120 has a minimum height H2, and one of the non-slitportions NS has a maximum height H1, As described in FIG. 5A-5C above,part of one of the first light absorbing patterns 100 a may be disposedin the slit 120 and other part of the one of the first light absorbingpatterns 100 a may be disposed on the non-slit portion NS, so the firstlight absorbing pattern 100 a may have different portions at differentheights. Similarly, part of one of the second light absorbing patterns100 b may be disposed in the slit 120 and other part of the one of thesecond light absorbing patterns 100 b may be disposed on the non-slitportion NS, so the second light absorbing pattern 100 b may havedifferent portions at different heights. Similarly, part of one of thethird light absorbing patterns 100 c may be disposed in the slit 120 andother part of the one of the third light absorbing patterns 100 c may bedisposed on the non-slit portion NS, so the third light absorbingpattern 100 c may have different portions at different heights.

The height difference of the maximum height H1 and the minimum height H2may be greater than or equal to 1 μm and less than or equal to 5 μm (1μm≤(H1−H2)≤5 μm), such as 2 μm, 3 μm, or 4 μm, but it is not limitedthereto.

Moreover, it should be noted that, the light absorbing patterns havingdifferent portions at different heights can increase the chance of thenon-target lights (such as the non-target lights L2) being absorbed, andthe non-target lights (such as the non-target lights L2) reaching thesensing element 20 can be reduced. For example, as shown in FIGS. 5A-5C,a target light L1 can easily reach the sensing element 20, and anon-target light L2 may be reduced to non-target light L2′ after beingabsorbed by the light absorbing patterns having different portions atdifferent heights. The target lights L1 may be the lights that irradiateto the sensing element 20 through the aperture region 10A, and thenon-target lights may be other lights excluding the target lights L1.

Next, refer to FIGS. 6A-6B, which are partially enlarged schematicdiagrams of region R2 in FIG. 1 in some embodiments of the presentdisclosure. FIGS. 6A-6B show various aspects of the slits 120 and thedam structure 122 of the display panel. The slits 120 and the damstructure 122 disposed in the non-aperture region 10B, and the slits 120may have various widths.

As shown in FIG. 6A, in some embodiments, the dam structure 122 has awidth W1′, and the slits 120 have a width W3′, a width W5, a width W7, awidth W9, a width W11, a width W13, and a width W15, respectively. Thewidth W1′ of the dam structure 122 is measured along a directionperpendicular to a local extending direction of the dam structure 122.The widths of the slits 120 (such as the width W3′, the width W5, thewidth W7, the width W9, the width W11, the width W13, and the width W15)are respectively measured along a direction perpendicular to a localextending direction of the corresponding slit.

In addition, there is a non-slit portion NS1 between the dam structure122 and the slit 120 adjacent to the dam structure 122, the non-slitportion NS1 has a width W2′. The non-slit portions NS between adjacentones of the slits 120 have a width W4, a width W6, a width W8, a widthW10, a width W12, and a width W14, respectively. The width W2′ of thenon-slit portion NS1, the widths of the non-slit portions NS (such asthe width W4, the width W6, the width W8, the width W10, the width W12,and the width W14) are respectively measured along a directionperpendicular to a local extending direction of the correspondingnon-slit portion.

In some embodiments, the width W1′ of the dam structure 122, the widthsof the slits 120, the width W2′ of the non-slit portion NS1, and thewidths of the non-slit portions NS may be the same or different. Forexample, the width W1′, the width W2′, the width W3′, the width W4, thewidth W5, the width W6, the width W7, the width W8, the width W9, thewidth W10, the width W11, the width W12, the width W13, the width W14,and the width W15 may be 40.218 μm, 20.868 μm, 13.328 μm, 11.817 μm,13.301 μm, 11.003 μm, 12.9 μm, 12.526 μm, 13.68 μm, 11.762 μm, 12.141μm, 12.521 μm, 12.165 μm, 13.328 μm, and 12.165 μm, respectively, but itis not limited thereto.

As shown in FIG. 6B, in some other embodiments, the dam structure 122has a width W21, and the slits 120 have a width W23, a width W25, awidth W27, a width W29, and a width W31, respectively. The width W21 ofthe dam structure 122 is measured along a direction perpendicular to alocal extending direction of the dam structure 122. The widths of theslits 120 (such as the width W23, the width W25, the width W27, thewidth W29 and the width W31) are respectively measured along a directionperpendicular to a local extending direction of the corresponding slit.

In addition, there is a non-slit portion NS1 between the dam structure122 and the slit 120 adjacent to the dam structure 122, the non-slitportion NS1 has a width W22. The non-slit portions NS between adjacentones of the slits 120 have a width W24, a width W26, a width W28, and awidth W30, respectively. The width W22 of the non-slit portion NS1, andthe widths of the non-slit portions NS (such as the width W24, the widthW26, the width W28 and the width W30) are respectively measured along adirection perpendicular to a local extending direction of thecorresponding non-slit portion. In some embodiments, the width W21, thewidth W22, the width W23, the width W24, the width W25, the width W26,the width W27, the width W28, the width W29, the width W30, and thewidth W31 may be 20.275 μm, 8.11 μm, 10.14 μm, 6.08 μm, 8.11 μm, 6.08μm, 8.11 μm, 7.1 μm, 7.1 μm, 7.1 μm, and 6.08 μm, respectively, but itis not limited thereto.

To summarize the above, in some embodiments, the display panel includesa plurality of light absorbing patterns disposed in the non-apertureregion of the non-display region, and the light absorbing patterns canabsorb or reduce different colors of lights. With the configuration ofthe light absorbing patterns, the non-target lights of variouswavelengths reaching the sensing element in the display device can bereduced. Therefore, the signal to noise ratio performance of the sensingelement in the display device can be improved.

Although some embodiments of the present disclosure and their advantageshave been described in detail, it should be understood that variouschanges, substitutions and alterations can be made herein withoutdeparting from the spirit and scope of the disclosure as defined by theappended claims. The features of the various embodiments can be used inany combination as long as they do not depart from the spirit and scopeof the present disclosure. Moreover, the scope of the presentapplication is not intended to be limited to the particular embodimentsof the process, machine, manufacture, composition of matter, means,methods and steps described in the specification. As one of ordinaryskill in the art will readily appreciate from the present disclosure,processes, machines, manufacture, compositions of matter, means,methods, or steps, presently existing or later to be developed, thatperform substantially the same function or achieve substantially thesame result as the corresponding embodiments described herein may beutilized according to the present disclosure. Accordingly, the appendedclaims are intended to include within their scope such processes,machines, manufacture, compositions of matter, means, methods or steps.In addition, each claim constitutes an individual embodiment, and theclaimed scope of the present disclosure includes the combinations of theclaims and embodiments. The scope of protection of present disclosure issubject to the definition of the scope of the appended claims. Anyembodiment or claim of the present disclosure does not need to meet allthe purposes, advantages, and features disclosed in the presentdisclosure.

What is claimed is:
 1. A display panel having a display region and anon-display region, wherein the non-display region has an apertureregion and a non-aperture region surrounding the aperture region, andthe display panel comprises: a plurality of light-emitting elementsdisposed in the display region; and a plurality of first light absorbingpatterns and a plurality of second light absorbing patterns disposed inthe non-aperture region, wherein the plurality of first light absorbingpatterns and the plurality of second light absorbing patterns areconfigured to absorb different colors of lights.
 2. The display panel asclaimed in claim 1, wherein the plurality of first light absorbingpatterns and the plurality of second light absorbing patterns arearranged in a staggered manner.
 3. The display panel as claimed in claim1, wherein a ratio of a width of the non-aperture region to a half of awidth of the aperture region is greater than or equal to 0.1 and lessthan or equal to
 1. 4. The display panel as claimed in claim 1, furthercomprising a light shielding layer with a ring shape overlapping a partof the aperture region and at least a part of the non-aperture region.5. The display panel as claimed in claim 4, wherein a ratio of a widthof an overlapping region that the light shielding layer overlaps thenon-aperture region to a width of the non-aperture region is greaterthan or equal to 0.1 and less than or equal to
 1. 6. The display panelas claimed in claim 4, wherein an aperture of the light shielding layeroverlaps the aperture region in a normal direction of the display panel.7. The display panel as claimed in claim 4, wherein a ratio of an areaof the overlapping region that the light shielding layer overlaps thenon-aperture region to an area of the non-aperture region is greaterthan or equal to 0.1 and less than or equal to
 1. 8. The display panelas claimed in claim 4, wherein an area of an overlapping region that thelight shielding layer overlaps the non-aperture region is greater thanor equal to 1 mm² and less than or equal to 8 mm².
 9. The display panelas claimed in claim 1, wherein one of the plurality of first lightabsorbing patterns has different portions at different heights.
 10. Thedisplay panel as claimed in claim 1, wherein one of the plurality ofsecond light absorbing patterns has different portions at differentheights.
 11. The display panel as claimed in claim 1, further comprisinga substrate comprising a plurality of slits disposed in the non-displayregion, wherein part of the plurality of first light absorbing patternsand part of the plurality of the second light absorbing patterns aredisposed in the plurality of slits.
 12. The display panel as claimed inclaim 11, wherein the substrate further comprises a plurality ofnon-slit portions disposed between adjacent ones of the plurality ofslits respectively, and other part of the plurality of first lightabsorbing patterns and other part of the plurality of second lightabsorbing patterns are disposed on the plurality of non-slit portions.13. The display panel as claimed in claim 1, further comprising aplurality of third light absorbing patterns disposed in the non-apertureregion, wherein the plurality of first light absorbing patterns, theplurality of second light absorbing patterns and the plurality of thirdlight absorbing patterns absorb different colors of lights.
 14. Thedisplay panel as claimed in claim 1, wherein an area of one of theplurality of first light absorbing patterns is different from an area ofone of the plurality of second light absorbing patterns.
 15. The displaypanel as claimed in claim 1, wherein a number of the plurality of firstlight absorbing patterns is different from a number of the plurality ofsecond light absorbing patterns.
 16. The display panel as claimed inclaim 1, further comprising a plurality of driving elements electricallyconnected to the plurality of light-emitting elements respectively,wherein the plurality of first light absorbing patterns and theplurality of second light absorbing patterns are not electricallyconnected to the plurality of driving elements.
 17. A display device,comprising: a sensing element; and a display panel having a displayregion and a non-display region, wherein the non-display region has anaperture region and a non-aperture region surrounding the apertureregion, and the display panel comprises: a plurality of light-emittingelements disposed in the display region; and a plurality of first lightabsorbing patterns and a plurality of second light absorbing patternsdisposed in the non-aperture region, wherein the plurality of firstlight absorbing patterns and the plurality of second light absorbingpatterns are configured to absorb different colors of lights, whereinthe sensing element is disposed corresponding to the aperture region.18. The display device as claimed in claim 17, further comprising alight shielding layer with a ring shape overlapping a part of theaperture region and at least a part of the non-aperture region.
 19. Thedisplay panel as claimed in claim 17, wherein the plurality of firstlight absorbing patterns and the plurality of second light absorbingpatterns are arranged in a staggered manner.
 20. The display panel asclaimed in claim 17, wherein a ratio of a width of the non-apertureregion to a half of a width of the aperture region is greater than orequal to 0.1 and less than or equal to 1.